Optical convolution for quantitative phase retrieval using the transport of intensity equation
Applied Optics, 2017Propagation-based phase imaging using the transport of intensity equation (TIE) allows rapid, deterministic phase retrieval from defocused images. However, computational solutions to the TIE suffer from significant low-frequency noise artifacts and are unique up to the application of boundary conditions on the phase.
Tonmoy Chakraborty +1 more
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Evaluation of finite difference and FFT-based solutions of the transport of intensity equation
Applied Optics, 2017A finite difference method is proposed for solving the transport of intensity equation. Simulation results show that although slower than fast Fourier transform (FFT)-based methods, finite difference methods are able to reconstruct the phase with better accuracy due to relaxed assumptions for solving the transport of intensity equation relative to FFT ...
Hongbo, Zhang +6 more
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Fast and accurate phase-unwrapping algorithm based on the transport of intensity equation
Applied Optics, 2017The phase information of a complex field is routinely obtained using coherent measurement techniques as, e.g., interferometry or holography. The obtained measurement result is subject to a 2π ambiguity and is often referred to as wrapped phase. Phase-unwrapping algorithms (PUAs) are commonly employed to remove this ambiguity and, hence, obtain the ...
Juan, Martinez-Carranza +2 more
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A novel single-shot geometry for transport of intensity equation
Frontiers in Optics + Laser Science 2024 (FiO, LS)Phase measurement is very important in several applications. In this paper, we present a novel optical module based on Michelson interferometer type geometry for intensity acquisition suitable for transport of intensity equation.
Ram Kumar, Naveen K. Nishchal
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Characterization of nonlinear phase shifts by use of the temporal transport-of-intensity equation
Optics Letters, 2005A temporal transport-of-intensity equation is derived to describe the evolution of the instantaneous power of the electric field in a dispersive medium. As its spatial counterpart, which can be used to measure wavefronts using the intensity measured after various amounts of diffraction, the temporal transport-of-intensity equation allows the ...
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Transport of intensity equation method and its applications
Microscopy (Oxford, England), 2021Masanori Mitome
exaly
High accuracy quantitative phase imaging based on transport-of-intensity equation
Optics and Lasers in Engineering, 2023Chonglei Zhang
exaly
An optical multiple-image authentication based on transport of intensity equation
Optics and Lasers in Engineering, 2019Ailing Tian
exaly
Characterization of microlenses by transport of intensity equation
Seventh Global Intelligent Industry Conference (GIIC 2024)Jiaxiang Chen +4 more
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Single-shot phase imaging based on transport of intensity equation
Optics Communications, 2020Naveen K Nishchal
exaly